NDLI: Evolution of the shear wave velocity during shaking modeled in centrifuge shaking table tests

Content Provider	Springer Nature Link
Author	Lee, Chung Jung Wang, Chung Ru Wei, Yui Chen Hung, Wen Yi
Copyright Year	2011
Abstract	Two in-flight shear wave velocity measurement systems were developed to perform the subsurface exploration of shear wave velocity in a centrifuge model. The bender elements test and the pre-shaking test used in the study provided reliable and consistent shear wave velocity profiles along the model depth before and after shaking in the centrifuge shaking table tests. In addition, the use of the bender elements measurement system particularly developed here allowed continuous examination of the evolution of shear wave velocity not only during and after the shaking periods in the small shaking events but also during the dissipation period of excess pore water pressure after liquefaction in the large shaking events. The test results showed that the shear wave velocity at different values of excess pore water pressure ratio varied as the effective mean stress to the power of 0.27, to a first approximation. Consequently, a relationship between the shear wave velocity evolution ratio and the excess pore water pressure ratio is proposed to evaluate the changes in shear wave velocity due to excess pore water generation and dissipation during shaking events. This relation will assist engineers in determining the shear stiffness reduction ratio at various ru levels when a sand deposit is subjected to different levels of earthquake shaking.
Starting Page	401
Ending Page	420
Page Count	20
File Format	PDF
ISSN	1570761X
Journal	Bulletin of Earthquake Engineering
Volume Number	10
Issue Number	2
e-ISSN	15731456
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-09-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Shear wave velocity Bender elements Centrifuge modeling Shaking table tests Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Hydrogeology Environmental Engineering/Biotechnology Structural Geology Civil Engineering
Content Type	Text
Resource Type	Article
Subject	Building and Construction Geophysics Geotechnical Engineering and Engineering Geology Civil and Structural Engineering

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